基于SketchUp的亚美马褂木树干模拟及材积估算

Simulation on tree trunk and estimation on volume of Liriodendron sino-americanum based on SketchUp

以郁闭林分中11年生落叶阔叶用材树种亚美马褂木伐倒木带皮各分段圆盘为研究对象,圆盘处理后数码拍照,导入SketchUp软件进行模拟树干生长和不同干形曲线旋转体3D模型建模及模型材积分析。建立了不同干形曲线旋转体树干模型,比较各模型材积,中央断面法模型材积适用性较好。该模型为树干3D建模及其应用初探。它可作为构建整个树干生长基础构建和建模方法,为进一步构建动态3D生长模型和数据分析应用,以及人工林林分3D群体模型提供建模依据。

The tree trunk from 1 l-year-old timber tree of Liriodendron in close lorest was simulated anct estimated on volume based on SketchUp. Tree was cutted down and divided to some sections to some length extent, and then made some disc. Digital photo of disc imported, then tree trunk mode was simulated and finally stem volume was estimated based on SketchUp. According to different stem curves, the 3D mode was used to comparation to stem volumn. The original 3D mode was processed by a series of tools in combination to physical data. It would further develop configuration for 3D dynamic timing growth, for the future related application, for quantitative analysis techniques and on the base of 3D mode of the plantation digitized by SketchUp.